After the explosion of a gas well in Pennsylvania, USA, which was being drilled using the hydraulic fracturing or “fracking” method, residents raise concerns about the environmental impact of the incident, which leaked thousands of gallons of toxic chemical-filled drilling fluid into the area's soil and water table.
http://www.france24.com/en/20110422-us-gas-well-contained-but-concerns-rise-fracking,
http://www.upi.com/Top_News/US/2011/04/22/Fracking-fluid-leak-stops-at-Pa-gas-well/UPI-74271303506292/

United Nations humanitarian agencies are calling for increased humanitarian assistance for the millions of people across the Horn of Africa who are suffering from severe food and water shortages due to failed harvests caused by the worst drought in 30 years.
http://www.ezega.com/News/NewsDetails.aspx?Page=heads&NewsID=2874 ,
http://indepthafrica.com/news/east-africa/millions-need-food-aid-in-ethiopia-somalia-and-kenya/ ,
http://www.un.org/apps/news/story.asp?NewsID=38224&Cr=ethiopia&Cr1=